Powers/Abilities:
Mercury possesses the metamutant
ability to think and move at superhuman speeds.

History:

(JLA: The New Blood
#2) - Born in a future era, Pietro Allen was menaced by the
metamutant-hunting Sentinels of his time
and found refuge in the past, sparking a war between Sentinels of future
and past with the New Blood (a sub-division
of newer, primarily metamutant, members of the
Judgment League: Avengers) caught in
the middle. After the altercation with the Sentinels, Mercury decided
to join the New Blood, although his super-speed timing could not keep him
from finding his foot in his mouth as he sought to conform to his new
era.

(Flash and the Scarlet Witch#10) - Mercury and his
allies, the Flash and
Scarlet Witch, got caught up in a plot
by the nefarious Professor Kang.
Unfortunately, Mercury was not fast enough to help the Flash, who was possibly
killed by Professor Kang as a result. Mercury was devastated by his
inability to help his friend.

(Judgment League: Avengers#122) - "Trial of Mariner"
- The metamutant member of the Judgment League:
Avengers known as Aqua-Mariner (Arthur
McKenzie) was framed for the destruction of three Roxxon oil
freighters, a heinous criminal act which was actually perpetrated by the
metamutant-hating madman known as Will
Magnus. Given Aqua-Mariner's longtime personal war against
surface dwellers who would harm his undersea habitat, the United States
government automatically labeled him an "eco-terrorist" and sent in an army
of troops to apprehend him without so much as an investigation.
Aqua-Mariner was eventually captured by his fellow Judgment League: Avengers
teammates and imprisoned without trial. Aqua-Mariner's imprisonment,
which was undertaken by Super-Soldier (Clark
Kent) and the other non-metamutant members of the Judgment League:
Avengers, caused a rift within the team that split the organization down
metamutant lines.

Outraged by the manner in which their fellow metamutant was
imprisoned without trial, Mercury and his fellow New Blood members, under
the guidance of the mysterious New Gotham
power broker known only as Mr. X (Marco
Xavier), freed Aqua-Mariner from JLA custody and set out to find
the lost city of Atlantis, the legendary
city of Homo Superior, under the surface of the Atlantic Ocean. But
the non-metamutant members of the Judgment League: Avengers were not about
to give up Aqua-Mariner without a fight . . .

(JLX#1) - "A League of Their Own!" - The Judgment League:
Avengers finally caught up to Mercury and his rogue New Blood teammates (who
were now calling themselves the JLX) on the waters of the North Atlantic
Ocean. The Judgment League: Avengers' resident archer
Hawkeye (Clint Archer) attempted to disable
the JLX Wavecruiser with a volley of arrows, but Mercury used his superhuman
speed to skip across the waves and intercept each one before they did any
damage. A battle between the Judgment League: Avengers and the JLX
ensued and came to an end only after the Judgment League: Avenger member
known as Angelhawk (Carter Hall), who
was secretly a metamutant in league with Mr. X, feigned a severe back injury,
causing the JLA to retreat in order to seek medical attention for their
comrade.

With their former Judgment League: Avengers allies no longer
a threat, Mercury and his fellow JLX members entered their Wavecruiser and
prepared to submerge beneath the ocean's surface in search of Atlantis, the
legendary ancestral home of metamutantkind. Although the Wavecruiser's
hull was damaged by the JLA member known as Captain
Marvel (Billy Mar-Vell) during the battle, the impulsive Mercury
wanted to take the risk and submerge anyway. Still affected by his
previous altercation with Professor Kang, Mercury reasoned to himself that
he would rather be at the bottom of the ocean than have to come to terms
with his failed efforts to save the Flash.

After taking on some water, the JLX Wavecruiser finally made
its way to the domed city of Atlantis. But to Mercury's, and everyone
else's, surprise, the entire city of Atlantis was abandoned. As the
JLX began to investigate, they were attacked by Will
Magnus, Jocasta, and a squadron
of Sentinel robots. Will Magnus had used the artifact known as the
Serpent Crown to locate Atlantis in an
attempt to exterminate its metamutant population. Mercury and his JLX
teammates were soon engaged in a massive battle with Will Magnus and his
Sentinels. During the course of the battle, Mercury used his super
speed to rescue Aqua-Mariner from an attacking Sentinel. But after
Will Magnus' most beloved creation, Jocasta, was severely damaged in the
battle, Magnus called off his Sentinels and retreated to the surface in an
attempt to repair Jocasta.

In
the final moments of the battle, Mr. X revealed himself to be the shape-shifting
J'onn J'onzz, the last survivor of the
Martian race known as the
Skrull. When the battle ended,
Mercury and his fellow JLX teammates agreed to stay affiliated with Mr. X,
vowing to solve the mystery of why the Atlanteans departed Atlantis and where
they have gone.

(JLX#2) - "Apocalypso" - Mercury and the JLX were in search
of their missing teammate Apollo (Ray
Summers) when the black-hearted villain known as
Thanoseid attacked. Luckily,
Magneto and the
Magnetic Men were able to lend a hand.
During the course of their team-up, an over-confident Mercury challenged
Nickel of the Magnetic Men to a race.
Nickel found the little metamutant so annoying that he tripped Mercury with
a morph-stended foot and declared himself the winner.

(JLX#4) - Mercury and the JLX teamed-up with
Wonder Woman (Ororo).

(JLX#6) - Mercury and the JLX battled the villainous
Ms. Tique and her
Brotherhood of Injustice.

(JLX Unleashed!#1(bts)) - The United States Congress passed
the Armageddon Agenda, the legislation
that permitted Will Magnus and his Sentinels to declare war on all
metamutants. Magnus' mandate and funding enabled him to wage a relentless
war on the metamutant population, leading to many deaths -- both human and
metamutant. Mercury was able to escape back to his native future era
with Iriskani -- but other metamutants
were not so fortunate.

Comments: created by Gerard Jones,
Mark Waid, Howard Porter, and John Dell; the "JLX-Press" letter column written
by Brian Augustyn

The Flash was a partner
of the Scarlet Witch and an ally of
Mercury (Pietro "Pete" Allen).
In FLASH AND THE SCARLET WITCH
#10, an altercation with the villainous
Professor Kang left the Flash on the
brink of death. Mercury, who was not fast enough to help the Flash,
was left emotionally scarred by his sense of failure. It was not revealed
if the Flash ultimately survived. Presumably, the Flash possessed
superhuman speed.

The Flash is an Amalgam
Universe version of The Flash (Wallace Rudolph "Wally"
West) of the DC Universe.

Iriskani is an entity from
the future with close ties to Mercury (Pietro "Pete"
Allen). During the Armageddon
Agenda, the legislation passed by the United States Congress that
permitted Will Magnus and his
Sentinels to declare war on all metamutants,
Iriskani allowed Mercury to escape to the future with her for his own
good.

Iriskani may or may not have a connection to
Iris Simpson, the wife of Mercury's ancestor,
Speed Demon (Blaze Allen), who was killed
by the demon Night Spectre on her wedding
day.

Iriskani is an amalgam
of the Askani of the Marvel Universe and Iris
Allen West of the DC Universe.

Professor Kang is an enemy
of Mercury (Pietro "Pete" Allen),
the Flash, and the
Scarlet Witch. Although it is unclear
whether he originated from Mercury's alternate future timeline or from the
present, it is known that Professor Kang was responsible for nearly killing
the Flash in FLASH AND THE SCARLET WITCH
#10. Professor Kang may or may not be an alternate version
/ incarnation of the time-traveling Kang the Time
Conqueror (Chronos-Tut the Time Pharaoh) and / or
Vengeance (Eobard Thawne).

Professor Kang is an amalgam
of the Kang the Conqueror of the Marvel Universe and
Professor Zoom (Eobard Thawne) of the
DC Universe.

Scarlet Witch was a partner
of the Flash and an ally of
Mercury (Pietro "Pete" Allen).
In FLASH AND THE SCARLET WITCH
#10, the Scarlet Witch was most likely present when the villainous
Professor Kang left the Flash on the
brink of death. Presumably, the Scarlet Witch possesses the ability
to manipulate chaos magic through the use of hex spheres.

Scarlet Witch is an Amalgam
Universe version of Scarlet Witch (Wanda Maximoff)of the Marvel Universe.